From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/media/dvb-frontends/lnbp22.c | 148 ++++++++++++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 kernel/drivers/media/dvb-frontends/lnbp22.c (limited to 'kernel/drivers/media/dvb-frontends/lnbp22.c') diff --git a/kernel/drivers/media/dvb-frontends/lnbp22.c b/kernel/drivers/media/dvb-frontends/lnbp22.c new file mode 100644 index 000000000..c463da7f6 --- /dev/null +++ b/kernel/drivers/media/dvb-frontends/lnbp22.c @@ -0,0 +1,148 @@ +/* + * lnbp22.h - driver for lnb supply and control ic lnbp22 + * + * Copyright (C) 2006 Dominik Kuhlen + * Based on lnbp21 driver + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * Or, point your browser to http://www.gnu.org/copyleft/gpl.html + * + * + * the project's page is at http://www.linuxtv.org + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include "dvb_frontend.h" +#include "lnbp22.h" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); + + +#define dprintk(lvl, arg...) if (debug >= (lvl)) printk(arg) + +struct lnbp22 { + u8 config[4]; + struct i2c_adapter *i2c; +}; + +static int lnbp22_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) +{ + struct lnbp22 *lnbp22 = (struct lnbp22 *)fe->sec_priv; + struct i2c_msg msg = { + .addr = 0x08, + .flags = 0, + .buf = (char *)&lnbp22->config, + .len = sizeof(lnbp22->config), + }; + + dprintk(1, "%s: %d (18V=%d 13V=%d)\n", __func__, voltage, + SEC_VOLTAGE_18, SEC_VOLTAGE_13); + + lnbp22->config[3] = 0x60; /* Power down */ + switch (voltage) { + case SEC_VOLTAGE_OFF: + break; + case SEC_VOLTAGE_13: + lnbp22->config[3] |= LNBP22_EN; + break; + case SEC_VOLTAGE_18: + lnbp22->config[3] |= (LNBP22_EN | LNBP22_VSEL); + break; + default: + return -EINVAL; + } + + dprintk(1, "%s: 0x%02x)\n", __func__, lnbp22->config[3]); + return (i2c_transfer(lnbp22->i2c, &msg, 1) == 1) ? 0 : -EIO; +} + +static int lnbp22_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg) +{ + struct lnbp22 *lnbp22 = (struct lnbp22 *) fe->sec_priv; + struct i2c_msg msg = { + .addr = 0x08, + .flags = 0, + .buf = (char *)&lnbp22->config, + .len = sizeof(lnbp22->config), + }; + + dprintk(1, "%s: %d\n", __func__, (int)arg); + if (arg) + lnbp22->config[3] |= LNBP22_LLC; + else + lnbp22->config[3] &= ~LNBP22_LLC; + + return (i2c_transfer(lnbp22->i2c, &msg, 1) == 1) ? 0 : -EIO; +} + +static void lnbp22_release(struct dvb_frontend *fe) +{ + dprintk(1, "%s\n", __func__); + /* LNBP power off */ + lnbp22_set_voltage(fe, SEC_VOLTAGE_OFF); + + /* free data */ + kfree(fe->sec_priv); + fe->sec_priv = NULL; +} + +struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c) +{ + struct lnbp22 *lnbp22 = kmalloc(sizeof(struct lnbp22), GFP_KERNEL); + if (!lnbp22) + return NULL; + + /* default configuration */ + lnbp22->config[0] = 0x00; /* ? */ + lnbp22->config[1] = 0x28; /* ? */ + lnbp22->config[2] = 0x48; /* ? */ + lnbp22->config[3] = 0x60; /* Power down */ + lnbp22->i2c = i2c; + fe->sec_priv = lnbp22; + + /* detect if it is present or not */ + if (lnbp22_set_voltage(fe, SEC_VOLTAGE_OFF)) { + dprintk(0, "%s LNBP22 not found\n", __func__); + kfree(lnbp22); + fe->sec_priv = NULL; + return NULL; + } + + /* install release callback */ + fe->ops.release_sec = lnbp22_release; + + /* override frontend ops */ + fe->ops.set_voltage = lnbp22_set_voltage; + fe->ops.enable_high_lnb_voltage = lnbp22_enable_high_lnb_voltage; + + return fe; +} +EXPORT_SYMBOL(lnbp22_attach); + +MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp22"); +MODULE_AUTHOR("Dominik Kuhlen"); +MODULE_LICENSE("GPL"); -- cgit 1.2.3-korg